US4205539A - Axially-retained tripod homokinetic joint - Google Patents

Axially-retained tripod homokinetic joint Download PDF

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Publication number
US4205539A
US4205539A US05/923,726 US92372678A US4205539A US 4205539 A US4205539 A US 4205539A US 92372678 A US92372678 A US 92372678A US 4205539 A US4205539 A US 4205539A
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United States
Prior art keywords
tripod
joint
bell
planar
intermediate element
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US05/923,726
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English (en)
Inventor
Michel Orain
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Glaenzer Spicer SA
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Glaenzer Spicer SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
    • F16D3/207—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially inwardly from the coupling part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S464/00—Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts
    • Y10S464/904—Homokinetic coupling
    • Y10S464/905—Torque transmitted via radially extending pin

Definitions

  • the present invention relates to axially-retained homokinetic joints of the tripod type.
  • These joints comprise two main parts, namely a tripod element and a bell element, each part being rigid with one of the shafts or elements to be connected.
  • the tripod element comprises three spindles or trunnions on which are rotatably and slidably mounted three rollers which roll between three pairs of tracks having a part-circular section and formed in the bell element, the axes of the tracks being parallel to the axis of the shaft rigid with the bell.
  • a suitable device must be provided which allows the joint to retain its strength and angular movement.
  • An object of the present invention is to provide a tripod joint comprising an axial retaining device which has the advantage of long life and is capable of retaining the precision of the axial connection throughout the life of the joint.
  • a joint of the tripod type which comprises a first part in the form of a tripod element rigid with one of the shafts to be connected and a second part in the form of a bell element which is rigid with the other of the two shafts, the tripod element comprising three trunnions on which are rotatably and slidably mounted rollers received in three raceways having a part-circular sectional shape formed in the bell element, the axes of the raceways being parallel to the axis of the shaft rigid with the bell element, axial retaining means for retaining the two parts of the joint relative to each other, and at least one intermediate element connected to the bell element by a ball joint and connected to the tripod element by a sliding connection which slides in a direction roughly perpendicular to the axis of the shaft rigid with the tripod element.
  • the concave part of the ball joint is formed partly in the bell element and partly in an element which is detachably secured to the bell element;
  • the sliding connection is formed by two planar faces formed on the tripod element and cooperative with two planar surfaces formed on the intermediate element or elements;
  • two separate intermediate elements are provided disposed on each side of the tripod element and connected by a rod which is in one piece with or rigid with one of the intermediate elements and extends in a passageway formed in the centre part of the tripod element;
  • a single intermediate element comprising two parts which are roughly symmetrical relative to the plane of symmetry of the tripod element and connected by at least one bridge portion passing round the hub of the tripod element;
  • the intermediate element is constructed in three segments capable of occupying, on one hand, a withdrawn position in which they can be inserted in the bell element, and, on the other hand, an operative position in which they are locked inside the bell element and constitute the convex part of the ball joint.
  • FIG. 1 is an elevational view, with a part cut away and partly in section, of a first embodiment of a joint according to the invention
  • FIG. 2 is a detail elevational view
  • FIG. 3 is a diagram illustrating one of the advantages obtained
  • FIG. 4 is an elevational view, partly in section, of a modification
  • FIG. 5 is a sectional view taken on line V--V of FIG. 4;
  • FIG. 6 is an elevational view, partly in section, of another modification
  • FIG. 7 is a partial sectional view of a joint according to another modification.
  • FIG. 8 is a cross-sectional view of a part of the joint shown in FIG. 7;
  • FIG. 9 is an elevational view, partly in section, of another modification.
  • FIG. 10 is an end elevational view of the arrangement in three segments of an intermediate element of the joint shown in FIG. 9, and
  • FIG. 11 is a partial sectional view of the joint shown in FIG. 9 in its assembled state.
  • FIG. 1 shows a tripod joint which is capable of wide angular deviation between the two parts of the joint and in which the shafts connected thereby are retained axially in accordance with the present invention.
  • a stub-axle having an axis X--X, which drives a wheel (not shown) of a front-drive vehicle, is rigid with a tripod element 2 through a bowl-shaped element 3.
  • a tubular shaft 4 having an axis Y--Y fixed to the bell element 5 transmits the driving torque to the tripod element 2, the bowl-shaped element 3 and the stub axle 1, through three rollers 6 which are rotatable and slidable on trunnions 7 of the tripod element 2 and roll along raceways 8 formed in the bell element.
  • These raceways are formed by pairs of grooves having a part-circular section the axes of which are parallel to the axis of the shaft 4.
  • the axial retaining device comprises two planar-convex elements 9 and 10.
  • the element 9 is interposed between a concave part-spherical inner end 11 of the bell element and a planar surface 12 of the tripod element
  • the element 10 is interposed between another planar face 13 of the tripod element and a part-spherical concave seat 14 formed in a thrust element 15.
  • the latter is axially trapped between an elastically yieldable fastener 16 having three branches and the element 9 and radially centered in a bore 17 of the bell element.
  • the fastener 16 has three branches 18 clipped into three cavities 19 formed in the outer surface of the bell element.
  • the two convex faces of the element 9, 10 and the concave bearing surfaces 11 and 14 constitute a ball joint the centre of which is the centre of the tripod joint.
  • the two planar-convex elements 9 and 10 are inclined with the tripod element by the swivelling effect between their part-spherical surfaces and the complementary part-spherical seats 11 and 14 formed respectively in the inner end of the bell element and on the thrust element 15.
  • a sliding of the planar surfaces 12 and 13 permits a relative radial adaptation between the tripod element 2 and the bell element 5.
  • This device has a wear resistance which is substantially increased relative to the devices of the art and consequently the main object of the invention is attained. Moreover, the part-spherical shape of the inner end 11 of the bell element largely contributes to the strengthening of this element which is subjected to high bending stresses.
  • Another notable advantage provided by this device is to reduce the distance travelled through by the roller on the raceways for a given angular deviation ⁇ , which permits shortening by a length ⁇ the recesses defined between the raceways and consequently either reducing the bending moments, all other factors being equal, or increasing the transmissible torque for a given bending moment.
  • the value of the shortening ⁇ is given by the following formula (FIG. 4)
  • r represents the distance between the axis Z--Z of a raceway and the axis Y--Y of the bell element
  • ⁇ is the angular deviation of the two parts of the joint in operation.
  • the device according to the invention enables the angular deviation to be increased.
  • the full lines represent the device according to the invention in which the ball joint remains centered for an angular deviation of the tripod joint, whereas a sliding occurs between the tripod element and the ball.
  • the dotted lines represent a conventional arrangement in which the ball is placed between two roughly planar surfaces and becomes out of centre for an angular deviation, which gives the difference ⁇ between 1 1 and 1 2 . This value of ⁇ increases of course with the angular deviation of the tripod joint in operation.
  • FIGS. 4 to 11 the elements corresponding to those of FIG. 1 which have not been markedly modified are designated by the same reference numbers.
  • the tripod element 2 and the bell element 5 are axially retained by means of an intermediate element 40 having a generally part-spherical shape and so constructed as to constitute two portions 41 equivalent to the elements 9 and 10 of FIG. 1 interconnected by at least one bridge portion 42 which extends between two adjacent branches or trunnions 7 of the tripod element.
  • this element 40 slides without clearance on two planar faces 43 and 44 of the tripod element and provides a ball joint as it is received between a concave part-spherical bearing surface 46 defined by a fastener 47 clipped by three branches 48 in three cavities 49 of the bell element. Assembly is achieved by sliding the element 40 on the hub of the tripod element before the latter is placed in position and secured in the bowl-shaped element 3.
  • FIG. 5 shows two bridge portions 42 which are interposed between the branches or trunnions 7 of the tripod element.
  • FIG. 6 is also of the same type as that shown in FIG. 1 since it comprises two elements 60, 61 defining the convex part-spherical bearing surfaces of the ball joint and the planar faces of the sliding connection with the tripod element 2. These two elements are connected by a rod 62 which is integral with or secured to one of the elements and fitted in a cavity 63 in the other element. The rod 62 extends with sufficient radial clearance through a bore 64 formed in the hub of the tripod element. As before, the assembly is axially maintained by a fastener 65.
  • FIG. 7 shows an embodiment in which the ball connection to the bell element 5 is obtained by means of a hollow element 70 (FIG. 8) comprising a part-spherical wall 71 divided into three segments 72 separated by three notches 73 through which extend the three branches 7 of the tripod element.
  • This part-spherical wall is received in a concave part-spherical cavity 74 formed in the branches 5 a of the bell element.
  • the element 70 further comprises an end wall 75 provided with a bore 76 and defining two planar parallel faces 77, 78. Extending in the bore 76 is a screwthreaded stud 79 which is in one piece with or rigid with the hub of the tripod element and carries a nut 80 and a washer 81 or any known like means.
  • the hub of the tripod element has a corresponding planar face 82 and the sliding connection between the tripod element and the intermediate element is provided by the clamping of the wall 75 of the hollow ball between the lateral surface 82 of the tripod element and the washer 81 by the nut 80.
  • FIGS. 9 to 11 show another embodiment of the device according to the invention.
  • the intermediate element 90 is formed by three segments 91 (FIG. 10) each of which subtends an angle of 120° at the centre of the element 90.
  • Each of these segments comprises a part-spherical wall 92 forming part of the ball and two end walls 93 defining parallel planar surfaces 94 adapted to cooperate with the lateral surfaces 95 of the tripod element.
  • the two end walls 92 are defined internally by part-cylindrical surfaces 96 the generatrices of which are parallel to the axis X--X of the tripod element.
  • the arrangement is completed by a dumb-bell shaped pin 97 the function of which will be apparent from the ensuing description and which extends through a bore 98 of the tripod with clearance.
  • the pin 97 When the three segments 91 are placed around the hub of the tripod, the pin 97 occupying the position shown in FIG. 11, they can be moved toward each other to a withdrawn position thereof so as to permit the insertion of the bell element 5 within the bowl-shaped element 3, the outside diameter of the three segments being slightly smaller than the diameter of the bore of the bell element.
  • the joint When the part-spherical segments are in facing relation to the concave cavity in the bell element, the joint is placed in its position of maximum angular deviation of its two parts so as to render the end of the pin 97 accessible.
  • a thrust exerted on this pin makes its assume its final position shown in FIG. 9 in which it is retained by two elastically-yieldable rings 99.
  • the three segments 91 are then radially spread apart and axially lock the tripod element with respect to the ball element. Disassembly is achieved just as easily by thrusting the pin 97 to its end position in order to radially release the three segments.
  • the invention has the same important advantages over the prior art.
  • the joint is very strong and has a longer life owing to the large size of the surfaces which are in sliding contact and their good lubrication since the whole of the joint bathes in lubricant.
  • the strength of the bell element is furthermore increased since it is possible to shorten the branches defining the raceways and increase the internal fillet radius of the connection of these branches to the centre part of the bell element. Alternatively, for a given strength, the maximum angular deviation of the two joint parts may be increased.
  • the construction, assembly and disassembly of the component parts of the joint remain moreover very simple.
  • FIGS. 4 to 11 are substantially more advantageous than that shown in FIGS. 1 to 3. Indeed, in the latter case, for a large angular deviation of the two shafts connected by the tripod joint, the stability of the separate parts 9, 10 in the shape of a planar-convex meniscus, is less satisfactory than that of the assembled elements or the elements in one piece which perform the same function in the other embodiments of the joint. After a period of utilization of the joint, play may be produced which might result in a wedging or escape of the meniscuses owing to an insufficient enclosing angle in the region of the meniscus-retaining arcs provided on the bell element, or on the part connected to the latter, which defines one of the part-spherical surfaces of the ball joint. As opposed to this, with a single intermediate part or elements rendered rigid with each other, this risk is avoided, since the enclosing angle is equal to the sum of the elementary angles and reaches a value sufficient to prevent any wedging and of course any escape.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
US05/923,726 1977-07-28 1978-07-11 Axially-retained tripod homokinetic joint Expired - Lifetime US4205539A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7723274A FR2398924A1 (fr) 1977-07-28 1977-07-28 Joint homocinetique tripode a retenue axiale
FR7723274 1977-07-28

Publications (1)

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US4205539A true US4205539A (en) 1980-06-03

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ID=9193944

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Application Number Title Priority Date Filing Date
US05/923,726 Expired - Lifetime US4205539A (en) 1977-07-28 1978-07-11 Axially-retained tripod homokinetic joint

Country Status (11)

Country Link
US (1) US4205539A (ru)
JP (1) JPS5425356A (ru)
AR (1) AR214807A1 (ru)
BR (1) BR7804863A (ru)
DE (1) DE2833221C2 (ru)
ES (1) ES472138A1 (ru)
FR (1) FR2398924A1 (ru)
GB (1) GB2002875B (ru)
IT (1) IT1109588B (ru)
MX (1) MX145904A (ru)
SU (1) SU936801A3 (ru)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255945A (en) * 1978-03-22 1981-03-17 Glaenzer Spicer Tripod homokinetic joints which have axial retaining means
US4336696A (en) * 1979-02-09 1982-06-29 Toyota Jidosha Kogyo Kabushiki Kaisha Tripod type constant velocity universal joint
US4421494A (en) * 1978-09-14 1983-12-20 Toyota Jidosha Kogyo Kabushiki Kaisha Tripod type constant velocity universal joint
US4543076A (en) * 1982-11-05 1985-09-24 Affarsverket Ffv Universal joint
US4547175A (en) * 1983-01-14 1985-10-15 Industrie Pirelli S.P.A. Transmission joint
US4556399A (en) * 1982-12-16 1985-12-03 Compagnie Des Produits Industriels De L'ouest Protective bellows, particularly for the front wheel drive of a motor vehicle
US4878881A (en) * 1987-10-06 1989-11-07 Glaenzer-Spicer Fixed homokinetic joint for transmissions of driving wheels of automobile vehicles
US4894044A (en) * 1987-10-01 1990-01-16 Glaenzer-Spicer Homokinetic joint comprising an axially retained tripod element
US4908005A (en) * 1987-10-01 1990-03-13 Glaenzer-Spicer Axially retained wide flexing angle homokinetic joint
CN101260910B (zh) * 2008-04-07 2010-06-09 温州市冠盛汽车零部件集团股份有限公司 内叉滑道式可轴向滑移等速万向节
US20110017763A1 (en) * 2005-07-14 2011-01-27 Colelli Robert P Merchandise dispensing apparatus providing theft deterrence
CN102128214A (zh) * 2010-12-31 2011-07-20 温州市冠盛汽车零部件集团股份有限公司 双联式可轴向滑移万向节
US20130193746A1 (en) * 2012-02-01 2013-08-01 Caterpillar Inc. Flexible cover for an axle hub joint
CN105134810A (zh) * 2015-06-23 2015-12-09 江苏荣基重工科技有限公司 密封万向接头

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2424438A1 (fr) * 1978-04-26 1979-11-23 Glaenzer Spicer Sa Dispositif de protection perfectionne, notamment pour articulation et palier d'arbre de transmission
FR2487022A1 (fr) * 1980-07-18 1982-01-22 Glaenzer Spicer Sa Joint homocinetique a tripode
FR2632031B1 (fr) * 1988-05-26 1992-08-14 Glaenzer Spicer Sa Joint homocinetique a fixite axiale
FR2621369B1 (fr) * 1987-10-01 1991-09-06 Glaenzer Spicer Sa Joint homocinetique tripode a fixite axiale et a grande angularite
FR2703117A1 (fr) * 1993-03-23 1994-09-30 Guimbretiere Pierre Joint de transmission du type à tulipe.
FR2721667A1 (fr) * 1994-06-23 1995-12-29 Gkn Glaenzer Spicer Joint homocinétique à fixité axiale pour transmission à haute vitesse.
CN115143198B (zh) * 2022-09-06 2022-11-18 万向钱潮股份公司 一种轻量化耐磨万向节

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818721A (en) * 1972-09-15 1974-06-25 Wahlmark Systems Constant velocity universal drive
US3877251A (en) * 1973-06-15 1975-04-15 Wahlmark Systems Universal joint system
US3930378A (en) * 1973-11-08 1976-01-06 Schmid Leopold F Axially-displaceable and angularly-movable universal coupling

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2176216A5 (ru) * 1972-03-14 1973-10-26 Glaenzer Spicer Sa

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818721A (en) * 1972-09-15 1974-06-25 Wahlmark Systems Constant velocity universal drive
US3877251A (en) * 1973-06-15 1975-04-15 Wahlmark Systems Universal joint system
US3930378A (en) * 1973-11-08 1976-01-06 Schmid Leopold F Axially-displaceable and angularly-movable universal coupling

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255945A (en) * 1978-03-22 1981-03-17 Glaenzer Spicer Tripod homokinetic joints which have axial retaining means
US4421494A (en) * 1978-09-14 1983-12-20 Toyota Jidosha Kogyo Kabushiki Kaisha Tripod type constant velocity universal joint
US4336696A (en) * 1979-02-09 1982-06-29 Toyota Jidosha Kogyo Kabushiki Kaisha Tripod type constant velocity universal joint
US4543076A (en) * 1982-11-05 1985-09-24 Affarsverket Ffv Universal joint
US4556399A (en) * 1982-12-16 1985-12-03 Compagnie Des Produits Industriels De L'ouest Protective bellows, particularly for the front wheel drive of a motor vehicle
US4547175A (en) * 1983-01-14 1985-10-15 Industrie Pirelli S.P.A. Transmission joint
US4908005A (en) * 1987-10-01 1990-03-13 Glaenzer-Spicer Axially retained wide flexing angle homokinetic joint
US4894044A (en) * 1987-10-01 1990-01-16 Glaenzer-Spicer Homokinetic joint comprising an axially retained tripod element
US4878881A (en) * 1987-10-06 1989-11-07 Glaenzer-Spicer Fixed homokinetic joint for transmissions of driving wheels of automobile vehicles
US20110017763A1 (en) * 2005-07-14 2011-01-27 Colelli Robert P Merchandise dispensing apparatus providing theft deterrence
US8727179B2 (en) * 2005-07-14 2014-05-20 Rtc Industries, Inc. Merchandise dispensing apparatus providing theft deterrence
CN101260910B (zh) * 2008-04-07 2010-06-09 温州市冠盛汽车零部件集团股份有限公司 内叉滑道式可轴向滑移等速万向节
CN102128214A (zh) * 2010-12-31 2011-07-20 温州市冠盛汽车零部件集团股份有限公司 双联式可轴向滑移万向节
CN102128214B (zh) * 2010-12-31 2012-12-19 温州市冠盛汽车零部件集团股份有限公司 双联式可轴向滑移万向节
US20130193746A1 (en) * 2012-02-01 2013-08-01 Caterpillar Inc. Flexible cover for an axle hub joint
US9050854B2 (en) * 2012-02-01 2015-06-09 Caterpillar Inc. Flexible cover for an axle hub joint
CN105134810A (zh) * 2015-06-23 2015-12-09 江苏荣基重工科技有限公司 密封万向接头

Also Published As

Publication number Publication date
IT1109588B (it) 1985-12-23
MX145904A (es) 1982-04-19
DE2833221A1 (de) 1979-02-08
SU936801A3 (ru) 1982-06-15
FR2398924A1 (fr) 1979-02-23
AR214807A1 (es) 1979-07-31
JPS5425356A (en) 1979-02-26
GB2002875B (en) 1982-02-03
ES472138A1 (es) 1979-05-01
FR2398924B1 (ru) 1981-01-16
JPH0217729B2 (ru) 1990-04-23
GB2002875A (en) 1979-02-28
BR7804863A (pt) 1979-03-13
DE2833221C2 (de) 1985-04-18
IT7868792A0 (it) 1978-07-27

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